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- Title
旋转摩擦挤压加温法制备金刚石表面 Ti 涂层.
- Authors
李毅; 于爱兵; 洪鑫; 袁建东
- Abstract
In order to realize metallization of the diamond surface, a rotary friction extrusion heating method is proposed to fabricate Ti layer on the surface of artificial single crystal diamond. The micromorphology of the inner surface of Ti layer and the phase composition of the interface between the diamond and Ti layer were analyzed with a scanning electron microscope and an X-ray diffractometer, and element analysis was carried out with an energy disperse spectrometer. The effect of diffusion annealing temperature and holding time on phase composition of the inner surface of Ti layer was studied. The formation mechanism of the diamond/Ti layer interface was analyzed. The research results show that a uniform and dense Ti layer is formed on the diamond surface after rotary friction extrusion. After diffusion annealing at 600°C for 0.5 h, dot-shaped TiC grains were formed on the inner surface of Ti layer, and the chemical combination between diamond and Ti layer was realized. With the increase of diffusion annealing temperature and holding time, the morphology of TiC grains grows from dot-shaped to rod-shaped. The mass fraction of TiC of the interface increases with the increase of diffusion annealing temperature. The formation of Ti layer on the diamond surface with rotary friction extrusion heating method can be divided into five stages: initial stage, primary diffusion stage, secondary diffusion stage, TiC nucleation stage and TiC growth stage.
- Subjects
DIAMOND surfaces; DIAMOND crystals; SCANNING electron microscopes; SINGLE crystals; GRAIN farming; X-ray diffractometers; X-ray spectrometers
- Publication
Acta Materiae Compositae Sinica, 2022, Vol 39, Issue 1, p292
- ISSN
1000-3851
- Publication type
Article
- DOI
10.13801/j.cnki.fhclxb.20210409.001